Different types of lettuce

Growing Romaine at home without soil, pesticide-free in hot climate is easy in a controlled environment. Highest vitamins when harvested fresh and eat raw.

The three most common varieties of lettuces are romaine, butterhead and crisphead. They provide varying amounts of vitamins. Generally, the darker the lettuce, the more nutrients it contains. Romaine lettuce scores high for vitamin content;

World's Healthiest Foods endorses it as a food that is heart-healthy, and lists it as an excellent source of certain vitamins. Butterhead lettuce, which includes Bibb, provides less vitamins, but is still a good source of some.

Iceberg lettuce, which provides negligible amounts of vitamins, is at the bottom of the list.